Nothing
globalVariables(c('.','value','ltype','variable','av_fn','timestamp','expiration','type','delta','.SD','year','between','wday','isday','.I','rolldt',
'isholiday','yr','yrmo','frino','yrqtr','optexp','xoptexp','isweek','ismo','isqtr','isyr','category','paramname','hassymbol','DT_ENTRY','def_value','no','outform'))
Any scripts or data that you put into this service are public.
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.